fire ant

Short definition from Wiktionary

Noun

1. 1
   Any of several red or yellow ants that can inflict a harsh sting: Solenopsis spp. (tropical fire ants)
2. 2
   Any of several red or yellow ants that can inflict a harsh sting: Oecophylla spp. (weaver ants), of Southeast Asia
3. 3
   Any of several red or yellow ants that can inflict a harsh sting: Solenopsis invicta (red imported fire ant)
4. 4
   Any of several red or yellow ants that can inflict a harsh sting: Wasmannia auropunctata (electric ant, little fire ant).